Retrieve height of datalist when height not initially set?

[cawthor2]

I'm trying to dynamically adjust the height of a container div based on the height of a datalist it contains. However, I don't have a default height set for the datalist, the height just flexes based on how many rows are returned. I thought I could just do an body onload statement like this:

onload="document.getElementById('detail_div').style.height = document.getElementById('DataList1').height;"

but this doesn't return anything. If I explicitly set the height of the DataList, then it works fine. How can I find out the height of my DataList if I don't set it when its created?

 

[ca8msm]

Why do you need to set the height of the div? Div's by default will grow to the height of their containing elements.


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[cawthor2]

Oops...sorry, you are correct. It's because I had absolute positioning on my datalist, it wasn't being contained within the div. Changed to relative and the div expands as expected.